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(No Model.) 2 Sheets-Sheet 1. J. SIMPSON. WAGON DUMP.

No. 418,763. Patented Jan. 7, 1890.

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2 Sheets-#Sheet 2.

(No Model.)

J. SIMPSON. WAGON DUMP.

No. 418,763. Patented Jan. 7, 1890.

UNITED STATES PATENT OFFICE.

JOHN SIMPSON, or MINNEAPOLIS, MINNESOTA, ASsIGNoR on oNE-IIALFTODEIGI-ITON A. ROBINSON, OF SAME PLACE.

WAGON SPECIFICATION forming part of Letters Patent No. 418,763, datedJanuary '7, 1890. l Application led August 24,1888. Serial No. 283,663.(No model.)

'To all whom; t may concern:

Be it known that 1, JOHN SIMPSON, of Minneapolis, in the county ofHennepin and State of Minnesota, have invented certain new and usefulImprovements in VagOn-Dumps, of which the following is 'a specification.

My invention relates to improvements in a dumpingplatform commonlyusedin `elevators pr other warehouses for tilting af wagon. in order thatits contents may bequickly re-v moved. f

My invention consists, generally, inthe construction and arrangementhereinafter de'- scribed, and particularly pointed out in the claims.

In the drawings which form a part of this specification, Figure l is alongitudinal vertical section of a wagon dump embodying my improvement.Fig. 2 is a plan View with a portion of .the platform broken away inor-A der to more clearly show` the operation of the brake. Fig. 3 is averticallongitudinal section showing the modification consisting of anattachment for raising the dumping-tim' bers. Fig. Il is a cross-sectiontaken on line ncof Fig.3. g

In the drawings, 2're`presents the framework upon which the mechanism issupported, and this frame-work may, if found desirable, be supportedupon suitable levers to form a weighing apparatus. Around the frame 2and above it I prefer to construct a platform 3. This platform ispreferably constructed with suitable openings runninglongitudinallytherein,which receive the dumping-timbers or track-beams -5. Thesetrackbeams are preferably placed at a distance apart to correspond withthe spread or gage of an ordinary Wagon, and are made of a size andlength suitable to support the Wagon when loaded. Each of thesetrack-beams is supplied with a segmental supporting-frame 7, extendinglongitudinallyv thereof.- This frame is preferably constructed of T-ironand is secured to the under Side of the trackbeams.

Rollers 9 are mounted in suitable bearings supported upon the frame 2and placed in line with the segmental frame 7 and so arranged that eachframe will bear upon two or more of the rollers 9. In order that bothjbeams is preferably iilled in with suitable timbers in order toproperly support the said frame. Instead of arranging the track-beams 6oto tilt while 4the main partof the platform jremains stationary, I maysupport the entire f `rplatform upon the segmental frame, in which caseit will be understood A that the platform itself will tilt.

One or more brake-beams 13 may be hinged or pivoted upon the frame 2 andextend under the segmental frame 7 and bear against it or the planks ll,so that as the end of the beam 13 is moved upward the said beam will 7oVbe brought in contact with the planking or With the segmental frame, andthe friction between the two Will control the movement of thetrack-beams as the frame travels on the rollers 9. A suitable shoe maybe secured Vv upon the beam atits point of contact to take the necessarywear. A stop or dog 15 is preferably located under the end ofthe'trackbeam, and is secured to the frame 2 by a suitable hinge 17. Imay prefer to connectsthis 8o stop with the brake-beam 13, so that asthe brake-beam 4is raised the stop will be operated. This maybe done byproviding the stop with an arm I6, projecting from the side opposite thepivot or hinge 17. A suitable link 18 connects the ends of thisprojection with an eyebolt upon the brake-beam 13.

It Will be seen that by raising the outer end of the lever 13 theprojection 16 is also raised, which causes the Stop l5 to Swing upon its9o pivot, releasing its upper extremity from the track-beam againstwhich it rests. The trackbeam is now in condition to be lowered, and theWeight of the wagon resting on the beam, being back of the segmentalframe 7, the beams will have a tendency to assume the position shown indotted lines in Fig. l. Their sudden or immediate change to thisposition will be retarded by the friction brought to bear bythe contactof the brake-beam 13 and roo the surface of the segmental frame 7.

Any suitable device may be used for raising the brake-beams. The onewhich I have shown is arranged to connect the outer end of thebrake-beam with the door 19 of the receiving-bin, into which the grainor other material is deposited. For this purpose a cable 21 may besecured to the end of the brakebeam 13, pass upward over a sheave orpulley 22 and be connected with a ring or staple secured to the saiddoor 19, and so arranged that as the door is raised tension will bebrought upon the said cable and the brakebeam operated. The pulley 22 ispreferably journaled upon the upper portion of the stop 15, in orderthat tension on the cable will aid in releasing' lthe said stop from thetrackbeams.

In Fig. 3 I have shown a device for independently operating the trackbeams, by which they may be raised without removing thc wagon. Thisdevice consists of two of the pulleys 9, secured upon a continuous shaft25, hung in suitable bearings upon the frame 2 and extending to the sideof the machine and provided with suitable means by which it may berotated at will of the operator.

The means which I prefer to employ are a bevel-gear 27, secured to theshaft 25 and meshing with the pinion 28 upon an upright shaft 29. Thisshaft 29 may be provided with a suitable hand-wheel 30, by which it isturned and by which motion is imparted to the shaft 25. It will be seenthat as the shaft 25 is revolved the rollers 9, secured thereto, willrevolve with their outer surfaces in contact with the T-iron or thesegmental frame 7, which will cause the said segmental frame to travelover the roll and raise or lower the track-beams, as desired. The stop15 in this case may be hinged or fulcrumed upon the traclebeams, withits lower end resting upon the frame 2 when the track-beams are in ahorizontal position. A suitable ratchet and pawl may be provided uponthe upright shaft 29, in order to hold the said shaft in any desiredposition. A rope or other tripping device may be connected to or operateupon the end of this stop, in order that it may be thrown out of theperpendicular.

The advantage of my improvement over the ordinary pivoteddumping-platform is that by supporting the timbers upon a segmentalframe resting on rollers, as described, I place the pivoted center,uponwhich the beams oscillate, above the bearing-point of the load, thusbalancing the load as it is tilted, preventing any suddenv movement ofthe timbers and avoiding the liability of breakage. The larger theradius of the segments the slower the timbers will operate. The segmentsmay be constructed of a radius having the center of motion a sufficientdistance above the platform to completely balance the load upon therollers and require force to bel exerted upon the platform in order totilt the load; but for ordinary use I prefer to construct the segmentsof such a length and radius that the load will be dumped by its ownweight when the beams or platform are released.

I prefer to place a support 33 under the rear end of the. track-beamsbearing upon the frame 2, in order to provide a stop or rest for thebeam when in a horizontal posit-ion.

I claim as my invention- 1. The combination, in a wagon-dump, of thetrack-beams 5, the segment-al frames secured to said beams, the rollers9,upon which said frames are supported, the brake-beam 13, bearing uponsaid frame, and a stop 15, connected and operated by said brake-beam,substantially as described.

2. The combination, in a wagon-dump, of the track-beams 5, the segmentalfralnes secured to said beams, the rollers 9,upon which said frames aresupport-ed, the brake-beam 13, arranged to bear against said frame, thedoor 19, anda cable 2l, connecting said brakebeam with the door,substantially as described.

3. The combination, in a wagon-dump, of the track-beams 5, the segmentalframes secured to said beams,the rollers 9,upon which said frames aresupported, the shaft 25, upon which two of said rollers are secured, andmeans for turning said shaft, substantially as described.

In testimony whereof I have hereunto set my hand this 18th day ofAugust, 1888.

JOHN SIMPSON.

In presence of- A. C. PAUL, R. H. SANFORD.

